超原子価ヨウ素化合物を用いる液晶性ジアリールジアセチレン誘導体の合成

抄録

The coupling reaction of alkynyl(phenyl)iodonium salts with alkynylcopper reagents proceeds under mild conditions to provide unsymmetrical diacetylenes. The length of the alkoxy groups in the alkynyl(phenyl)iodonium salts does not affect the coupling reaction and the unsymmetrical diaryldiacetylenes are selectively preparea. Also chiral diaryldiacetylene derivatives are prepared by this method in good yields. The prepared diaryldiacetylenes exhibit mesogenic properties.